Incredibly simple build, very small, best overdrive I've heard except for BSIAB. Awesome sound!! A must build for any DIYer! I personally will always keep this one around. Also, it was small enough to fit inside of an Altoids tin with the battery. Fantastic Joe.
I built the Easy Drive. It has an amazing amount of gain for one transistor. In fact, one reason I built it is to hear just how much gain you could get with one transistor. It intrigued me.